Changing the server policies to resolve data storage problems

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The server policy attributes that directly relate to data storage are the copy group destinations for backup and archive copy groups. Similarly, the management class, MIGDESTINATION, also impacts where data is stored.

Review any changes to the server storage policies. Issue the QUERY ACTLOG command to view the history of commands or changes that might affect storage policies. Also, use the following QUERY commands to determine if any changes were made:

QUERY COPYGROUP F=D
Review the DESTINATION settings for the TYPE=BACKUP and TYPE=ARCHIVE copy groups. Also review the "Migration Destination" for management classes used by HSM clients. If storage pool destinations were changed and resulting data read or write operations are now failing, either evaluate the changes made and correct the problem or revert to the previous settings.
QUERY NODE F=D
Assigning a node to a different domain might impact data read-and-write operations for that client. Specifically, the node might now be going to storage pool destinations that are not appropriate, based on the requirements of this node. For example, it might be assigned to a domain that does not have any TYPE=ARCHIVE copy group destinations. If this node tries to archive data, it fails.